Briggate Bend with a bang!

We were a bit nervous about negotiating the sharp and tight Briggate Bend in Whittlesey, we had been losing power and I said I'd check the weedhatch when we reached Whittlesey moorings. We actually rounded the bend with no problem, but when I blipped into reverse, there was a big bang and we lost all power, just as the heavens opened! The culprit was this umbrella.